British Army radiation drills at a remote Scottish base attract a subterranean, radioactive entity of unknown nature that vanishes, leaving two severely radiation-burned soldiers... and a bottomless crack in the earth. Others who meet the thing in the night suffer likewise, and with increasing severity; it seems to be able to absorb radiation from any source, growing bigger and bigger. What is it How do you destroy a thing that feeds on energy
An unexpected discovery pushes a vengeful, battle-hardened soldier into tracking down a charismatic movie star — the man he suspects of having a secret, whirlwind romance with his wife.